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- 068-2-75 Figure B.1-Calibration device of Spring hammer|Arrangement for the calibration of the calibration dIEC60068-2-75 Figure B.1-Calibration device of Spring hammer|Arrangement for the calibration of the calibration d...击器校准规范|IEC60068-2-75 Figure B.1-Calibration device of Spring hammer|Arrang...2016-02-21 14:50:40